linux-kernel - [PATCH V2 0/2] usb: musb: fix dropped packets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1464004844-26553-1-git-send-email-andrew.goodbody@cambrionix.com>
Date:	Mon, 23 May 2016 13:00:42 +0100
From:	Andrew Goodbody <andrew.goodbody@...brionix.com>
To:	<b-liu@...com>
CC:	<gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Andrew Goodbody <andrew.goodbody@...brionix.com>
Subject: [PATCH V2 0/2] usb: musb: fix dropped packets

The musb driver can drop rx packets when heavily loaded. These two
patches address two issues that can cause this. Both issues arose
when an endpoint was reprogrammed. The first patch is a logic bug
that resulted in a shared_fifo in rx mode not having its state
cleared out. The second patch fixes a race condition caused by
not stopping the dedicated endpoint for bulk packets before
rotating its queue which allowed a packet to be recieved and then
thrown away.

V2 added a comment and removed debugging code

Andrew Goodbody (2):
  usb: musb: Ensure rx reinit occurs for shared_fifo endpoints
  usb: musb: Stop bulk endpoint while queue is rotated

 drivers/usb/musb/musb_host.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

-- 
2.7.4